.btn_add_file {
    background: url("../images/btn_add_file.png") no-repeat scroll 0 0 rgba(0, 0, 0, 0);
    cursor: pointer;
    display: inline-block;
    float: left;
    height: 42px;
    width: 120px;
}
.btn_add_file input {
    cursor: pointer;
    opacity: 0;
    width: 100%;
}
.btn_start_upload {
    background: url("../images/btn_start_upload.png") no-repeat scroll 0 0 rgba(0, 0, 0, 0);
    border: medium none;
    cursor: pointer;
    display: inline-block;
    height: 42px;
    width: 132px;
}
.progress_bar {
    margin-top: 5px;
    width: 300px;
}
.progress_bar .bar {
    background: none repeat scroll 0 0 green;
    border-radius: 3px;
    height: 5px;
}